Spring 10 - Name: _ CHEM 340.01: Biochemistry I Exam...

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Name: _________________________________________________________________________________________________________ 1 CHEM 340.01: Biochemistry I Exam 2-Protein Function March 17, 2010 Part I-(50 pts.) : 2 pts. Each. Page 1 Page 2 Page 3 Page 4 1 C 7 D 15 A 22 B 2 B 8 B 16 B 23 B 3 A 9 D 17 C 24 B 4 C 10 B 18 D 25 A 5 C 11 D 19 C 6 B 12 D 20 B 13 A 21 C 14 C Part II: True or False (20 pts.) 1 pt. for each correct T or F, 4 pts. for each valid justification. 26) __ T __. With respect to oxygen binding, the distinguishing trait between Mb and Hb is cooperativity in Hb and noncooperativity in Mb. The cooperativity is due to the tetrameric structure of Hb. A Hb monomer would behave like Mb because it does not interact with any other subunits and can’t be cooperative. 27) _ F __ To be catalytically perfect, an enzyme has to have a k cat /K M value that is close to 10 9 M -1 s -1 . The k cat value alone isn’t enough to determine if it is catalytically perfect. 28)
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Spring 10 - Name: _ CHEM 340.01: Biochemistry I Exam...

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